A cold launch of Discover took a few seconds to load the autodiscover (I assume) file and then load the info on each of the applications. A subsequent warm load even took a few seconds to load all the data. Caching the autodiscover and the data for the apps that are displayed there would make for a more performant experience.
>(I assume) We are always improving startup time of applications, tracking it in bugzilla doesn't add much as everything is the task is open ended.